@article {1420,
	title = {Below-ground carbon allocation in mature beech and spruce trees following long-term, experimentally enhanced O3 exposure in Southern Germany},
	volume = {158},
	year = {2010},
	pages = {2604-2609},
	author = {Anderson, C.P. and Ritter, W. and Gregg, J. and Matyssek, R. and Grams, T.E.E.}
}
@article {1498,
	title = {Belowground effects of enhanced tropospheric ozone and drought in abeech/spruce forest (Fagus sylvatica L./Picea abies [L.] Karst).},
	volume = {158},
	year = {2010},
	pages = {1071-1078},
	author = {Nikolova, P.S. and Anderson, C.P. and Blaschke, H. and Matyssek, R. and Haberle, K.}
}
